Browsing by Author "Ferreira, Jorge"
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- Comparação do comportamento agronómico de cinco variedades de colzaPublication . Rodrigues, M.A.; Almeida, Arlindo; Ribeiro, Tiago; Ferreira, Jorge; Arrobas, MargaridaA colza é uma cultura oleaginosa cuja produção mundial está a aumentar, sobretudo pela importância do seu óleo para o fabrico de biocombustíveis. A colza é uma cultura de elevada produção de biomassa, tendo também valor forrageiro. Portugal é, praticamente, o único país europeu que não produz colza. Em Espanha produziram-se 28900 tono de semente em 2009. Contudo, estudos recentes têm mostrado que Portugal tem condições ecológicas favoráveis para a produção desta cultura.
- Dynamic capabilities and mediating effects of innovation on the competitive advantage and firm’s performance: the moderating role of organizational learning capabilityPublication . Ferreira, Jorge; Cardim, Sofia; Coelho, ArnaldoThe objective of this paper is to investigate the impact of exploration and exploitation capabilities on competitive advantage (hereafter CA) and performance, considering the mediating role of innovation capabilities (hereafter ICs) and the moderating role of organizational learning capability (hereafter OLC) on the proposed relationships. This investigation proposes a theoretical model tested using structural equation modelling (SEM), and a multi-group analysis is performed to understand the moderating role of organizational learning capability. A 90-item questionnaire exploring the relationships between dynamic capabilities (hereafter DCs) and innovation was developed, and a total of 387 valid questionnaires were collected from a sample of Portuguese’s smalland medium-sized enterprises (SMEs), a case of a transition economy. Therefore, this study contributes to the understanding of the direct and indirect impact of exploration and exploitation on CA variables, the mediating role of IC on CA and performance and the moderating effect of OLC in a transition economy.
- Response of rapeseed to nitrogen fertilisation in a mediterranean environmentPublication . Rodrigues, M.A.; Almeida, Arlindo; Ferreira, Jorge; Ribeiro, Tiago; Arrobas, MargaridaPortugal needs urgently to increase the production of vegetable oils to be able to meet the mandatory 10% minimum target to be achieved by all member states for the share of biofuels in transport petrol and diesel consumption by 2020 (Directive 2009/28/EC). Rapeseed oils the main raw material used in Europe for the manufacture of biofuels. Portugal, however, does not produce rapeseed oil, in spite of some studies have indicated that there are favourable ecological conditions to do that around the country [I, 2].
- Response of rapeseed to nitrogen fertilisation in a mediterranean environmentPublication . Rodrigues, M.A.; Almeida, Arlindo; Ferreira, Jorge; Ribeiro, Tiago; Arrobas, MargaridaPortugal needs urgency to increase the production of vegetable oils to be able to meet the mandatory 10% minimum target to be achieved by all EU member states for the proportion of biofuels in petrol and diesel consumption by 2020 (Directive 2009128/EC). Rapeseed oil is the main raw material used in Europe for the manufacture of biofuels. Portugal, however, does not produce rapeseed oil, in spite of some studies having indicated that there are favourable ecological conditions to do this throughout the country [I, 2]